Combined with practical work,from technological process,erection of consolidation platform and incremental launching platform,fabrication and installation of slide rail,field assembly of steel box beam and other aspects incremental launching construction technology of steel box beam is introduced in order to provide references for similar works.

As a modern laying pipe jacking technics, the pipe jacking construction technology has much advantage.

Combined with practical engineering of west bridge in Zhujiang bridge,the author separately illustrates the construction technology and time-limit of traditional bearing changing method and improved bearing as sideway,compares the two bearings,and introduces the selection of new-type bearing,in order to accumulate experience for bridge incremental launching construction.

The reasonable arrangement of the launching nose will be critical to the smooth proceeding of incremental launching construction of the whole bridge.

The main shipping channel bridge and the non-navigable span approach bridges of the Bridge respectively make use of the long span continuous composite arch bridges and continuous composite box girder bridges that are all erected by the multi-point and synchro incremental launching construction technique.

A description is given about the incremental launching technology used in the 96-meter double-track simply-supported trussed girder passing over the second ring road of Beijing.

Incremental launching method is popular in long span skew continuous beam bridges which are across canyons because constructing of freeways in the mountains of western China are limited by land feathers 、geological conditions and highway alignment .

The construction methods of steel box girder in Ji\'nan Huanghe cable-stayed bridge of Qingdao-Yinchuan Highway breaks the traditional incremental launching technology.

In box culvert incremental lounching construction,precipitation and covering water are often carried on contemporarily so as to ensure the box culvert and its bottom be avoided the effect of water,and ensure the construction to go on wheels.

This paper introduces the application of MATLAB to programming for continuous girder bridge by incremental lounching, particularly for analyzing the course internal force dynamic analysis.